用缓存实现静态页面的测试

答案：
<?php  
function CreateShtml()  

{  

ob_start(array("callback_CreateShtml","callback_GoToShtml"));  

}  

function callback_CreateShtml($buffer)[  

{  

$page = intval(@$_REQUEST["page"]);  

$fileName = $_SERVER['DOCUMENT_ROOT'] . dirname($_SERVER['PHP_SELF']) . "/" . basename($_SERVER['PHP_SELF'],".php") . ($page==0 ? "" : "_" . strval($page)) . ".htm";  

$fp = fopen($fileName,"wb");  

fwrite($fp,$buffer);  

fclose($fp);  

return $buffer;  

}  

function callback_GoToShtml($buffer)  

{  

$page = intval(@$_REQUEST["page"]);  

$fileName = basename($_SERVER['PHP_SELF'],".php") . ($page==0 ? "" : "_" . strval($page)) . ".htm";  

header("location:" . $fileName);  

return $buffer;  

}  

function GoToShtml()  

{  

$page = intval(@$_REQUEST["page"]);  

$fileName = basename($_SERVER['PHP_SELF'],".php") . ($page==0 ? "" : "_" . strval($page)) . ".htm";  

if(file_exists($fileName))  

header("location:" . $fileName);  

}  

function DeleteShtml($fileName=NULL)  

{  

if(is_null($fileName))  

$fileName = $_SERVER['DOCUMENT_ROOT'] . $_SERVER['PHP_SELF'];  

if($fileName[0]=="/")  

$fileName = $_SERVER['DOCUMENT_ROOT'] . $fileName;  

$path = dirname($fileName);  

$dir = dir($path);  

$patten = "/^" . basename($fileName, ".php") . "(_[0-9]+)?.htm/";  

while(($entry = $dir->read())!==false)  

{  

if(is_file($path . "/" .$entry) && preg_match($patten,$entry))  

unlink ($path . "/" . $entry);  

}  

}  


CreateShtml();  
echo "这是静态生成的页面！$page";  
GoToShtml();  
DeleteShtml();  
?> 

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